Hydrogen release from ammonia borane dissolved in an ionic liquid

Hydrogen release from ammonia borane (AB) dissolved in an ionic liquid (IL) is analyzed using batch, isothermal reaction data. It is found that an Avrami-Erofeyev type model, normally used in solid–gas systems, can be modified for this two-step reaction to describe the measured kinetics of hydrogen...

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Bibliographic Details
Published in:International journal of hydrogen energy 2011-12, Vol.36 (24), p.15689-15697
Main Authors: Ahluwalia, R.K., Peng, J.K., Hua, T.Q.
Format: Article
Language:English
Subjects:
Alternative fuels. Production and utilization
Ammonia borane
Applied sciences
Boranes
Conversion
Dissolution
Energy
Exact sciences and technology
Fuel cell vehicles
Fuels
Hydrogen
Ionic liquid
Ionic liquids
Mathematical models
On-board hydrogen storage
Reaction kinetics
Reactors
Streams
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Summary:Hydrogen release from ammonia borane (AB) dissolved in an ionic liquid (IL) is analyzed using batch, isothermal reaction data. It is found that an Avrami-Erofeyev type model, normally used in solid–gas systems, can be modified for this two-step reaction to describe the measured kinetics of hydrogen release and the observed double peaks in release rates. The kinetic model indicates that temperatures in excess of 200 °C are needed for complete conversion (release of 2.35 H 2-equivalents) in a reasonably compact flow reactor with
ISSN:0360-3199
1879-3487
DOI:10.1016/j.ijhydene.2011.09.016